build: macos: Set up -isysroot on macOS

This is because, since Mojave (10.14), macOS SDK does not put headers in /usr/include. Thus, we need to tell where is sysroot that includes headers and libraries. Signed-off-by: Hiroshi Hatake <[email protected]>
llhhbc · Jun 12, 2021 · 363d88c · 363d88c
1 parent fecc158
commit 363d88c
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -648,6 +648,10 @@ endif()
 # =========================================
 if(FLB_BACKTRACE)
   FLB_DEFINITION(FLB_HAVE_LIBBACKTRACE)
+  if (CMAKE_SYSTEM_NAME MATCHES "Darwin")
+    # From macOS Mojave, /usr/include does not store C SDK headers.
+    set(CFLAGS "${CFLAGS} -isysroot ${CMAKE_OSX_SYSROOT}")
+  endif()
   ExternalProject_Add(backtrace
     SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/lib/libbacktrace-ca0de05/
     CONFIGURE_COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/lib/libbacktrace-ca0de05/configure ${AUTOCONF_HOST_OPT} --host=${HOST} --prefix=<INSTALL_DIR> --enable-shared=no --enable-static=yes